Alert archive / Missouri / Tornado Warnings in 2020

Tornado Warning 53, NWS Memphis, TN

August 27, 2020Dunklin County, Pemiscot County, Missouri; Clay County, Arkansas

NWS Memphis, TN issued this tornado warning at Aug 27, 2020, 10:59 PM CDT for Dunklin County, Pemiscot County, Missouri; Clay County, Arkansas. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 27, 2020, 10:59 PM CDT (03:59 UTC)
Expired
Aug 27, 2020, 11:22 PM CDT
In force
23 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Clay County, AR, Dunklin County, MO, Pemiscot County, MO

The radar

The Memphis radar (KNQA), 109 km from the middle of the area, began a volume at 03:59 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 27, 3:47 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 4.0 hours before the alert went out and 166 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 2020-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2020-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
582 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

966 
WFUS54 KMEG 280359
TORMEG
ARC021-MOC069-155-280445-
/O.NEW.KMEG.TO.W.0053.200828T0359Z-200828T0445Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
1059 PM CDT Thu Aug 27 2020

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  East central Clay County in eastern Arkansas...
  Western Pemiscot County in southeastern Missouri...
  East central Dunklin County in southeastern Missouri...

* Until 1145 PM CDT.
    
* At 1059 PM CDT, doppler radar indicated a severe thunderstorm
  producing a tornado was located near Deering, or near Steele,
  moving north at 30 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Kennett, Piggott, Steele, Clarkton, Holcomb, Wardell, Deering,
  Bolton, Bragg City, Pascola, Nimmons, Lorine, West Kennett,
  Carryville, Rhyne, North Wardell, White Oak, Homestown, Ipley and
  New Survey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3639 8997 3639 8976 3610 8980 3609 8993
      3642 9020 3647 8996
TIME...MOT...LOC 0359Z 171DEG 27KT 3615 8989 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

KRF
2 follow-up statements
632 
WWUS54 KMEG 280412
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
1112 PM CDT Thu Aug 27 2020

ARC021-280422-
/O.CAN.KMEG.TO.W.0053.000000T0000Z-200828T0445Z/
Clay AR-
1112 PM CDT Thu Aug 27 2020

...THE TORNADO WARNING FOR EAST CENTRAL CLAY COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until midnight CDT for eastern
Arkansas...and southeastern Missouri.

LAT...LON 3647 8996 3639 8997 3639 8986 3632 8988
      3630 8996 3636 9007 3637 9006 3639 9007
      3640 9008 3640 9011 3642 9013 3641 9013
      3643 9015 3643 9014
TIME...MOT...LOC 0412Z 171DEG 85KT 3634 8993 

$$

MOC069-155-280445-
/O.CON.KMEG.TO.W.0053.000000T0000Z-200828T0445Z/
Pemiscot MO-Dunklin MO-
1112 PM CDT Thu Aug 27 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT FOR
NORTHWESTERN PEMISCOT AND EAST CENTRAL DUNKLIN COUNTIES...
    
At 1112 PM CDT, doppler radar indicated a severe thunderstorm
producing a tornado was located near Wardell, or 9 miles northeast of
Kennett, moving north at 100 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Clarkton, Holcomb, Baird, Frisbee and Peach Orchard. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3647 8996 3639 8997 3639 8986 3632 8988
      3630 8996 3636 9007 3637 9006 3639 9007
      3640 9008 3640 9011 3642 9013 3641 9013
      3643 9015 3643 9014
TIME...MOT...LOC 0412Z 171DEG 85KT 3634 8993 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

KRF
300 
WWUS54 KMEG 280422
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
1122 PM CDT Thu Aug 27 2020

MOC069-155-280432-
/O.CAN.KMEG.TO.W.0053.000000T0000Z-200828T0445Z/
Pemiscot MO-Dunklin MO-
1122 PM CDT Thu Aug 27 2020

...THE TORNADO WARNING FOR NORTHWESTERN PEMISCOT AND EAST CENTRAL
DUNKLIN COUNTIES IS CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

A Tornado Watch remains in effect until midnight CDT for eastern
Arkansas...and southeastern Missouri.

LAT...LON 3647 8996 3639 8997 3639 8986 3632 8988
      3630 8996 3636 9007 3637 9006 3639 9007
      3640 9008 3640 9011 3642 9013 3641 9013
      3643 9015 3643 9014
TIME...MOT...LOC 0421Z 171DEG 27KT 3642 8995 

$$

KRF

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 27, 10:29 PM CDTTornado WarningMEGDunklin, Pemiscot31 min
Aug 28, 4:45 PM CDTHeat AdvisoryMEGDunklin, Pemiscot26 hr
Aug 27, 7:00 PM CDTFlash Flood WarningMEGCross, Lee, St. Francis3 hr
Aug 27, 7:00 PM CDTTornado WarningMEGLee, St. Francis30 min
Aug 27, 7:09 PM CDTTornado WarningMEGCross, Poinsett36 min
Aug 27, 7:52 PM CDTTornado WarningMEGCross, Poinsett38 min
Aug 27, 7:57 PM CDTTornado WarningMEGCraighead, Poinsett35 min
Aug 27, 8:12 PM CDTTornado WarningMEGCraighead, Poinsett48 min
Aug 27, 8:47 PM CDTTornado WarningMEGCraighead, Mississippi, Poinsett43 min
Aug 27, 8:52 PM CDTTornado WarningMEGCraighead, Greene23 min
Aug 27, 8:53 PM CDTFlash Flood WarningMEGCrittenden3 hr
Aug 27, 9:10 PM CDTFlash Flood WarningMEGCraighead, Cross, Poinsett3 hr
Aug 27, 9:12 PM CDTTornado WarningMEGCraighead, Greene48 min
Aug 27, 9:49 PM CDTTornado WarningMEGClay, Greene23 min
Aug 28, 9:36 AM CDTAreal Flood AdvisoryMEGCross3 hr

Nearby

Tornado Warnings in Missouri, 2020Tornado Warnings in Arkansas, 2020Every tornado warning in 2020Tornadoes in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.